Reaction Quotient Value
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 45
- Joined: Fri Sep 28, 2018 12:25 am
Reaction Quotient Value
As we learned, if at some time during a reaction, the reaction quotient, Q, is less than K then the forward reaction is favored. If Q is greater than K then the reverse reaction is favored. However, what happens if Q is equal to K? Does that just mean that the same amount of reactants and products are formed?
-
- Posts: 61
- Joined: Fri Sep 28, 2018 12:29 am
-
- Posts: 89
- Joined: Fri Sep 28, 2018 12:26 am
- Been upvoted: 1 time
Re: Reaction Quotient Value
When Q=K, the reaction is at equilibrium; neither the product or reactant side is favored.
-
- Posts: 30
- Joined: Fri Sep 28, 2018 12:22 am
Re: Reaction Quotient Value
If Q is equal to K, that means that the concentrations at the time we are evaluating are equal to the concentrations found when the reaction is in equilibrium. This means that the reaction is in equilibrium, so neither reaction is favored because at equilibrium, the forward and reverse reactions occur at the same rate.
-
- Posts: 61
- Joined: Fri Sep 28, 2018 12:23 am
Re: Reaction Quotient Value
If Q < K, then [R] > [P] and forward reaction is favored
If Q > K, then [R] < [P] and reverse reaction is favored
Q=K then reaction is at equilibrium
If Q > K, then [R] < [P] and reverse reaction is favored
Q=K then reaction is at equilibrium
-
- Posts: 61
- Joined: Fri Sep 28, 2018 12:15 am
Re: Reaction Quotient Value
This would mean that the reaction is already at equilibrium and the concentrations of the products and the reactants are unchanging even though movement in each direction may still occur. At this point Q would not even exist and we would call it K. It's just a notation technicality but at a given temperature when Q equals K, Q ceases to exist and it is just K the equilibrium constant.
Return to “Non-Equilibrium Conditions & The Reaction Quotient”
Who is online
Users browsing this forum: No registered users and 10 guests